const express = require('express');
const router = express.Router();
const SiteModel = require('../models/SiteModel');
const siteModel = new SiteModel();

/**
 * GET sites listing.
 * 
 * Returns a list of all sites in JSON format.
 */
router.get('/', async function(req, res, next) {
    const sites = await siteModel.getAll();

    res.json(sites);
});

/**
 * GET site by ID.
 * 
 * Returns a specific site by its ID in JSON format.
 */
router.get('/:id', async function(req, res, next) {
    const siteId = req.params.id;

    const site = await siteModel.getById(siteId);

    if (!site) {
        return res.status(404).send('Site not found');
    } else {
        res.json(site);
    }
});

/**
 * POST create a new site.
 * 
 * Creates a new site with the provided domain name.
 * 
 * // TODO: Implement validation for domain name format
 * // TODO: Implement error handling for duplicate domains
 * // TODO: Ability to add additional site properties (e.g., name, description)
 */
router.post('/add/:domain', function(req, res, next) {
    const domain = req.params.domain;
    
    const newSite = siteModel.insert(domain);

    if (!newSite) {
        return res.status(400).send('Error creating site');
    } else {
        res.status(201).json(newSite);
    }
});

/**
 * PUT update an existing site.
 * 
 * Updates an existing site with the provided ID and new data.
 */

// TODO: Implement update functionality

/**
 * DELETE remove a site by ID.
 */

// TODO: Implement delete functionality


module.exports = router;